What is RTO for async replication disaster recovery?

Recovery Time Objective (RTO) is the time required to restore a business system after a disaster. This period begins when the disaster recovery plan is initiated and ends when the system is fully operational and meets its predefined service level objective.

The RTO for switchover and recovery using async replication is typically measured in minutes, calculated from the time the switchover is triggered until the ECS instance is running.

The RTO for disaster recovery drills is directly correlated with the data volume of the ECS system disk. The RTO for your business services must also include the time required to start the services and perform health checks, which varies depending on the complexity of the service.